Grassland degradation affects serum total IgG level, intestinal parasitic infection and liver and kidney indices of plateau pika
Received date: 2022-07-12
Accepted date: 2022-08-17
Online published: 2022-09-21
As a key species in the alpine grassland ecosystem of the Qinghai?Tibet Plateau, the plateau pika (Ochotona curzoniae) population increased rapidly with grassland degradation. Understanding the changes in innate immune function and organ index of liver and kidney indices of plateau pika is of great significance for further revealing the physiological mechanism of plateau pika population outbreak caused by grassland degradation on the Qinghai?Tibet Plateau. In this study, we investigated the number of burrow entrances, measured serum total IgG levels, intestinal parasitic infection, and liver and kidney indices of adult plateau pikas inhabiting lightly, moderately, and heavily degraded grassland (LD, MD and HD) at Qinghai Haibei National Field Research Station of Alpine Grassland Ecosystem. Our results showed that with grassland degradation, the number of burrow entrances and serum total IgG levels increased significantly, while the prevalence and intensity of infection of cestodes and nematodes as well as liver and kidney indices decreased markedly. The prevalence of infection of cestodes and liver index in males were significantly lower than those in females, and the prevalence and intensity of infection of cestodes and nematodes in females in HD were significantly lower than those in LD. These results indicate that grassland degradation induced by overgrazing enhances the innate immune of plateau pika and alleviate the damage of toxins to liver and kidney, which may promote population outbreaks.
Xueqin WU , Huiqing CHEN , Lu ZHANG , Guozhen SHANG , Yan WU , Jianghui BIAN . Grassland degradation affects serum total IgG level, intestinal parasitic infection and liver and kidney indices of plateau pika[J]. ACTA THERIOLOGICA SINICA, 2022 , 42(5) : 531 -539 . DOI: 10.16829/j.slxb.150715
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